Sawing-machine



(No Model.)

J. H. PETERSON. SAWING MAGHINE.

No. 494,887. Patented Apr. 4, 1893..

IA/5385s.- I INVENTOH A TTOHNE YS.

UNITED STATES PATENT OFFICE.

JOHN H. PETERSON, OF PORTLAND, OREGON.

SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 494,887, dated April 4, 1893.

Application filed August 25, 1892. serial No. 444,055- (No model.)

' To all whom it may concern.-

Be it known that I, J OHN HENRY PETERSON,

. of Portland, in the county of Multnomah and proved Sawing-Machine, of which the follow ing is a full, clear, and exact description.

The invention relates to wood working machinery such as shown and described in United States Patent No. 477,956, granted to me June 28, 1892.

The object of the invention is to provide a new and improved slitter which is simple and durable in construction, very effective in oporation, and arranged to prevent the feeding 15 of material not having the proper thickness.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a rear side elevation of the improvement with parts in section. Fig. 2 is a front side elevation of the same with parts in section. Fig. 3 is a plan view of the same with parts broken out. Fig. 4: is plan view of the top feed roll; and Fig. 5 is a side elevation of the expansion gear for driving the top feed roll.

The improved slittcr is mounted on a suitably constructed frame A, on which is journaled the arbor 13, carrying the usual circular saws G, and provided with a pulley D, connected by belt with suitable machinery for imparting a rotary motion to the said arbor and the saws. In front of the latter is arranged an adjustable feed table E, over which the material is fed to pass between the feed rolls F and G, of which the feed roll F extends through a slot in the table E, while the other feed roll is suspended above the table, as will be readily understood by reference to Fig. 2. The material, after leaving the saws C passes between an additional set of rear feed rolls H and I, from which the sawed material passes upon a table J arranged about in line with the table E, on the other side of the machine. The feed rolls F, G, H and I, are secured on the shafts F, G, H, and I of which the shafts F and H are journaled in suitable bearings arranged in the frame A, and the rear ends of the said shafts carry sprocket gear wheels F and H respectively connected with each other by a sprocket chain H On one of the shafts F or H (F as shown in the drawings), is secured a pulley F connected by a belt with a suitable pulley on a counter shaft for imparting a rotary motion to the said shaft F, which latter transmits its motion, by the sprocket chain 1-1 to the sprocket wheel H and consequently, to the shaft H carrying the feed roll H. The shafts G and'I' are journaled in curved frames K and L respectively, pivoted at K and L respectively on the frame A. The two frames K and L are pivotally connected with each other at or near their middles by a bolt or stud N held in the frame K and carryinga friction roller N engaging a horizontally extending elongated slot L in the frame L. On the frame K is formed or secured an arm K extending longitudinally and engaged at its under side by a vertically disposed screw K screwing in the frame A, and serving to raise or lower the arm K to impart an up or downward swinging motion of the frame K and consequently that of the frame L connected with the said frame K by the bolt or stud N. The shafts G and I are rotated from the corresponding shafts F and. H, by means of expansion gears P and P respectively, similar in construction to the expansion gears shown and described in the patent above referred to, so that further description is not deemed necessary.

It will be seen that when the material is fed over the table E and passes between the front feed rolls F and G, then the rolls in their rotary motion take hold of the material and feed it forward to the saws C, from which the material passes to the revolving rear feed rolls H and I, so that the material is securely held at both ends during the process of sawing. As the top feed rolls G and I are hung on pivoted frames connected with each other, the said rolls move simultaneously up and down according to the lumber to be sawed, so that in case material is fed to the front feed roll, the thickness of which is somewhat in excess of the thickness to which the said rolls are set, then the feed roll G rises, and by c this upward movement, imparts a swinging motion to its frame K which, by its connection with the frame L, imparts a like swinging motion to the latter, so that the rear feed roll I is correspondingly raised to admit the material after it leaves the saws (J, as above described. Thus, it will be seen that an automatic gage is formed by the feed rolls for the material to be sawed.

It will further be seen that if a piece of material is passed to the feed rolls F and G not having the thickness to which the rolls are set, then the latter will not feed the material forward, and consequently all material must have the proper thickness, but there is no objection to material having more than the desired thickness, and the machine feeds and cuts such material as before described.

It will be seen that by the pivotal connection between the framesK and L, the entire weight of the frames is on the top, front feed rolls G until the material reaches the rear or back feed rolls, and a like condition is obtained after the material has left the front feed rolls and the whole weight is on the rear feed rolls, so that the material is still fed properly through the saws until the entire piece has been out up and left the rear feed rolls and passed to the table J.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A slitter provided with oppositely projecting pivoted frames pivoted together and carrying at their free ends the front and rear top feed rolls, substantially as described.

2. A slitter comprising a front and a rear top feed roll,pivoted frames in which the said feed rolls are journaled, and a bolt pivotally connecting the said frames with each other at or near their middles,substantially as shown and described.

3. In a slitter, the combination with bottom front and rear feed rolls journaled in station saws, a set of front bottom and top'feed rolls,

a set of rear top and bottom feed rolls, pivoted frames carrying the said top feed rolls, 'and a bolt pivotally connecting the said frames with each other, substantially as shown and described.

5. In a slitter, the combination with revoluble saws, of a feed table leading to the said saws, a set-of front bottom and top feed rolls, a set of rear top' and bottom feed rolls, pivoted frames carrying the said top feed rolls, a bolt pivotally connecting the said frames with each other, and an expansion gear for connecting the respective bottom feed roll shaft with the corresponding top feed roll shaft, substantially as shown and described.

6. In a slitter, the combination with revoluble saws, of a feed table leading to the said saws,a set of front bottom and top feed rolls, a set of rear top and bottom feed rolls, pivoted frames carrying the said top feed rolls,

JOHN H. PETERSON. Witnesses:

ANTON HANDLER, J r., M. F. HENDERSON. 

